Fix whoami 2.0 API compatibility

[Copilot]

The whoami 2.0 upgrade introduced breaking API changes that caused compilation failures.

Changes

• Platform enum: Platform::MacOS → Platform::Mac
• Hostname API: fallible::hostname() → hostname() (returns Result directly)

// Before (whoami 1.x)
client_name: whoami::fallible::hostname().unwrap_or_else(|_| "ironrdp".to_owned()),
platform: match whoami::platform() {
    whoami::Platform::MacOS => MajorPlatformType::MACINTOSH,
    // ...
}

// After (whoami 2.0)
client_name: whoami::hostname().unwrap_or_else(|_| "ironrdp".to_owned()),
platform: match whoami::platform() {
    whoami::Platform::Mac => MajorPlatformType::MACINTOSH,
    // ...
}

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[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• docs.rs
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)
• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https /usr/lib/apt/methods/https debug-assertions=on --cfg feature="default" lib/�� lib/rustlib/x86_--error-format=json lib/rustlib/x86_--json=diagnostic-rendered-ansi,artifacts,future-incompat bin/rustc lib/rustlib/x86_/home/REDACTED/.rustup/toolchains/1.88.0-x86_64-REDACTED-linux-gnu/bin/rustc lib/rustlib/x86_--crate-name lib/rustlib/x86_resolv_conf bin/rustc lib/�� lib/rustlib/x86_--error-format=json lib/rustlib/x86_--json=diagnostic-rendered-ansi,artifacts,future-incompat f/idna_adapter-1--crate-type uild/thiserror-0git orted/include py-library known-linux-gnu/--ignore-submodules (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[github-actions]

Coverage Report 🤖 ⚙️

Past:
Total lines: 30247
Covered lines: 18808 (62.18%)

New:
Total lines: 30247
Covered lines: 18812 (62.19%)

Diff: +0.01%

[this comment will be updated automatically]